<?php

define('N',"\n");

function muoribene($msg,$ec,$clmy=false) {
	global $link;
	if ($link) mysqli_close($link);
	echo($msg);
	exit($ec);
}

$inifp='../conf/mastostart.ini';
$conf=@parse_ini_file($inifp)
	or muoribene('Non ho potuto aprire «'.$inifp.'».'.N,1);
if (!array_key_exists('instpath',$conf))
	muoribene('«'.$inifp.'»: “instpath” non è definito.'.N,1);

$path=preg_replace('#\?.*$#','',$_SERVER['REQUEST_URI']);
$path=preg_replace('/^'.preg_quote($conf['instpath'],'/').'/','',$path);
$ndir=preg_match_all('/\//',$path)-1;
$prepath='';
for ($i=0; $i<$ndir; $i++)
	$prepath.='../';
if (strlen($path)>0) {
	while ($path[strlen($path)-1]=='/') {
		$path=substr($path,0,-1);
		if (strlen($path)<1)
			break;
	}
}

$supplangs=['ca','en','es','fr','it'];
if (preg_match('#/('.implode('|',$supplangs).')$#',$path,$lang)===1) {
	$dlang=$lang[1];
	$path=substr($path,0,-3);
} elseif (array_key_exists('HTTP_ACCEPT_LANGUAGE',$_SERVER)) {
	$dlang=substr($_SERVER['HTTP_ACCEPT_LANGUAGE'],0,2);
	$dlang=in_array($dlang,$supplangs) ? $dlang : 'en';
} else {
	$dlang='en';
}

$locale=$dlang;
// il blocale è per non dover avere installate tutte le locale corrispondenti
$blocale='en_US.UTF-8';
//putenv('LC_ALL='.$blocale);
setlocale(LC_ALL,$blocale);
bindtextdomain('masthelp','./locale/'.$locale);
textdomain('masthelp');

$menu=array(
	'guide'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/'.$dlang, 'title'=>_('Guide'), 'selected'=>false, 'submenu'=>null),
	'instances'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/instances/'.$dlang, 'title'=>_('Instances'), 'selected'=>false, 'submenu'=>null),
	'about'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/about/'.$dlang, 'title'=>_('About'), 'selected'=>false, 'submenu'=>array(
			'stats'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/stats/'.$dlang, 'title'=>_('Statistics'), 'selected'=>false, 'submenu'=>null),
			'contribute'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/contribute/'.$dlang, 'title'=>_('Contribute'), 'selected'=>false, 'submenu'=>null)
		)
	),
	'language'=>array('liadd'=>null, 'href'=>null, 'title'=>_('Language'), 'selected'=>false, 'submenu'=>array(
			'ca'=>array('liadd'=>null, 'href'=>null, 'title'=>'Català', 'selected'=>false, 'submenu'=>null),
			'en'=>array('liadd'=>null, 'href'=>null, 'title'=>'English', 'selected'=>false, 'submenu'=>null),
/*			'aa'=>array('liadd'=>null, 'href'=>null, 'title'=>'Prova', 'selected'=>false, 'submenu'=>array(
					'bb'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/stats/'.$dlang, 'title'=>'Statistics', 'selected'=>false, 'submenu'=>null),
					'cc'=>array('liadd'=>null, 'href'=>$conf['instpath'].'/contribute/'.$dlang, 'title'=>'Contribute', 'selected'=>false, 'submenu'=>null)
				)
			),*/
			'es'=>array('liadd'=>null, 'href'=>null, 'title'=>'Español', 'selected'=>false, 'submenu'=>null),
			'fr'=>array('liadd'=>null, 'href'=>null, 'title'=>'Français', 'selected'=>false, 'submenu'=>null),
			'it'=>array('liadd'=>null, 'href'=>null, 'title'=>'Italiano', 'selected'=>false, 'submenu'=>null)
		)
	)
);

foreach ($supplangs as $lang)
	$menu['language']['submenu'][$lang]['href']=$conf['instpath'].$path.'/'.$lang;

$menu['language']['submenu'][$dlang]['href']=null;
$menu['language']['submenu'][$dlang]['liadd']=null;
$menu['language']['submenu'][$dlang]['selected']=true;

$cont=array();

$cont['css']=array('theme.css','menu.css');
$cont['js']=array('menu.js');
$cont['bodyadd']='';

switch($path) {

	case '':
	$cont['fp']='home_'.$dlang.'.php';
	$cont['atit']=' - '._('Guide');
	$cont['desc']=_('A thorough introduction to Mastodon');
	$cont['js'][]='shsum.js';
	$cont['js'][]='guideanchors.js';
	$cont['js'][]='scrolltrack.js';
	$cont['bodyadd']=' onscroll="scrolltrack()"';
	$menu['guide']['href']=null;
	$menu['guide']['selected']=true;
	$url='home';
	break;

	case '/instances':
	$cont['fp']='instances.php';
	$cont['atit']=' - '._('Instances');
	$cont['desc']=_('Recommended Mastodon instances');
	$cont['css'][]='instances.css';
	$menu['instances']['href']=null;
	$menu['instances']['selected']=true;
	$url='instances';
	break;

	case '/about':
	$cont['fp']='about.php';
	$cont['atit']=' - '._('About');
	$cont['desc']=_('Info about Mastodon Help’s authors, contributors, license');
	$menu['about']['href']=null;
	$menu['about']['selected']=true;
	$url='about';
	break;

	case '/stats':
	$cont['fp']='stats.php';
	$cont['atit']=' - '._('Statistics');
	$cont['desc']=_('Statistics about Mastodon Help');
	$cont['css'][]='stats.css';
	$menu['about']['selected']=true;
	$menu['about']['submenu']['stats']['href']=null;
	$menu['about']['submenu']['stats']['selected']=true;
	$url='stats';
	break;

	case '/contribute':
	$cont['fp']='contribute.php';
	$cont['atit']=' - '._('Contribute');
	$cont['desc']=_('Contribute to Mastodon Help development');
	$menu['about']['selected']=true;
	$menu['about']['submenu']['contribute']['href']=null;
	$menu['about']['submenu']['contribute']['selected']=true;
	$url='contribute';
	break;

	default:
	http_response_code(404);
	$cont['fp']='404.php';
	$cont['atit']=' - '._('Not found');
	$cont['desc']=_('Page not found');
	$url='404';
	/*$nffp='404.log';
	$nff=@fopen($nffp,'a');
	if ($nff) {
		fwrite($nff,$_SERVER['REQUEST_URI'].N);
		fclose($nff);
	} else {
		echo('Mannaggia!');
	}*/
	break;
}
$cont['mtit']=substr($cont['atit'],3);

$uid[]=$_SERVER['REMOTE_ADDR'];
if (array_key_exists('HTTP_USER_AGENT',$_SERVER)) $uid[]=$_SERVER['HTTP_USER_AGENT'];
if (array_key_exists('HTTP_ACCEPT',$_SERVER)) $uid[]=$_SERVER['HTTP_ACCEPT'];
if (array_key_exists('HTTP_ACCEPT_LANGUAGE',$_SERVER)) $uid[]=$_SERVER['HTTP_ACCEPT_LANGUAGE'];
if (array_key_exists('HTTP_ACCEPT_ENCODING',$_SERVER)) $uid[]=$_SERVER['HTTP_ACCEPT_ENCODING'];
$uid=md5(implode('|',$uid));

$link=mysqli_connect($conf['db_host'],$conf['db_user_name'],$conf['db_user_password'],$conf['db_name'],$conf['db_port'],$conf['db_socket']) or muoribene(_('Couldn’t connect to database: ').mysqli_connect_error().' ['.mysqli_connect_errno().']',2,false);
mysqli_set_charset($link,'utf8mb4');
$now=time();
$res=mysqli_query($link,'SELECT * FROM ZHits WHERE UID="'.$uid.'" ORDER BY TS DESC') or muoribene(__LINE__.': '.mysqli_error($link),2,true);
if (mysqli_num_rows($res)>0) {
	$row=mysqli_fetch_assoc($res);
	if ($now-$row['TS']<2) sleep(1);
}
mysqli_query($link,'INSERT INTO ZHits (UID,URL,Lang,TS) VALUES ("'.$uid.'","'.$url.'","'.$dlang.'",'.$now.')') or muoribene(__LINE__.': '.mysqli_error($link),2,true);
mysqli_close($link);

$menuout='';

function buildmenu($menu,$submenu=false) {
	global $menuout;
	foreach ($menu as $key=>$arr) {
		$liclasses=array();
		$menuout.='<li';
		if (!is_null($arr['liadd'])) $menuout.=' '.$arr['liadd'];
		if ($arr['selected']) $liclasses[]='hil';
		if (!is_null($arr['submenu'])) {
			$menuout.=' onmouseover="chulsh(this,true)" onmouseout="chulsh(this,false)"';
			($submenu) ? $liclasses[]='lipr' : $liclasses[]='lipd';
		}
		if (count($liclasses)>0) $menuout.=' class="'.implode(' ',$liclasses).'"';
		$menuout.='>';
		if (!is_null($arr['href'])) {
			$menuout.='<a href="'.$arr['href'].'">'.$arr['title'].'</a>';
		} else {
			$menuout.=$arr['title'];
		}
		if (!is_null($arr['submenu'])) {
			//$menuout.='<img src="/imgs/icona-32.png" width="5" height="5" style="float:right;">';
			($submenu) ? $class='ulb' : $class='ula';
			$menuout.=N.'<ul class="'.$class.'" onmouseover="ulsh(this,true)" onmouseout="ulsh(this,false)">'.N;
			buildmenu($arr['submenu'],true);
			$menuout.='</ul>'.N;
		}
		$menuout.='</li>'.N;
	}
}

buildmenu($menu);

//echo(htmlentities($menuout));

//$cjrand=rand(0,999999);
$cjrand='0.1';

echo('<!DOCTYPE HTML>
<html lang="'.$dlang.'">
<head>
<title>Mastodon Help'.$cont['atit'].'</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="description" content="'.$cont['desc'].'">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta property="og:image" content="'.$prepath.'imgs/ogimage02.png">
<link rel="icon" type="image/png" href="'.$prepath.'imgs/icona-32.png" sizes="32x32">
<link rel="icon" type="image/png" href="'.$prepath.'imgs/icona-192.png" sizes="192x192">
<link rel="icon" type="image/png" href="'.$prepath.'imgs/icona-512.png" sizes="512x512">
<link rel="apple-touch-icon-precomposed" href="'.$prepath.'imgs/icona-180.png">'.N);

foreach ($cont['css'] as $val)
	echo('<link rel="stylesheet" type="text/css" href="'.$prepath.'css/'.$val.'?v='.$cjrand.'">'.N);
foreach ($cont['js'] as $val)
	echo('<script language="JavaScript" src="'.$prepath.'js/'.$val.'?v='.$cjrand.'"></script>'.N);

echo('</head>
<body'.$cont['bodyadd'].'>
<nav>
<div id="hmenu">
<img src="'.$prepath.'imgs/menuicon_inactive.svg" id="menuicon" onclick="swmenu()">
<div id="menutit">Mastodon Help'.$cont['atit'].'</div>
<div id="menu">
<ul>
'.$menuout.'
</ul>
</div>
</div>'.N);

require($cont['fp']);

echo('</body>
</html>'.N);

?>